Our third electric car. It competed and placed 6th overall out of 25 competitors in the 2016 Formula SAE Electric Competition.
MY16's frame iterates upon our previous spaceframe designs, optimized for lower weight.
Designed for maximum stiffness and minimum weight, the uprights in MY16 are CNC machined out of one solid block of 7075 Aluminum and include a dynamically adjusting camber system, all in a package that is 20% lighter and 15% stiffer than MY15.
Like its predecessors, MY16 employs dual rear Emrax 228 motors. Independently driven, this setup grants us a great degree of dynamic control via torque vectoring and traction control.
MY16's motors are powered by a 5.46kWh battery containing 84 A123 LFP cells. We've kept the two Unitek Bamocar D3 motor controllers for their low weight, high output, and native CAN integration.
Powered by an ATmega 2560 microcontroller, our self-developed electric control unit (ECU) serves as the brain of MY16's control system, interfacing with the vehicle electronics via CAN and logging real-time data to an onboard Android device.
This is our first electric vehicle. Based on the major structure and design principles of our successful MY12, it competed and placed 7th of 14 competitors at the Lincoln, NE Formula SAE West in June 2014.
The frame is a welded chromoly spaceframe designed and analyzed for maximum torsional stiffness.
The inboard tripod housing and the axle for mounting the driven sprocket were combined into one 6061-T6 aluminum part, reducing weight by 2 lbs and increasing stiffness with a safety factor of 2.5, under the worst-case conditions.
For MY14, two Emrax 228 liquid-cooled motors independently drive the rear wheels, granting us a higher degree of control over the vehicle’s dynamics via torque vectoring and traction control.
MY14's Emrax motors are powered by a 5.4kWh battery composed of three modules, each containing 28 A123 LFP cells.
The motors are powered by two Unitek Bamocar D3 motor controllers. These controllers can provide 200A (twice our RMS)continuously while weighing only 8.5kg. Additionally, these controllers support CAN natively.
The brain of the MY14 control system is a self-developed electronic control unit (ECU) built from a National Instruments sbRIO single-board industrial computer. The sbRIO runs real-time LabView programs and interfaces with the vehicle through its CANbus.